88
AC-SVX001A-EN
Table 27. Diagnostics — main processor (continued)
Diagnostic
Name
Affects
Target
Severity
Persistence
Active
Modes
[Inactive
Modes]
Criteria
Reset
Level
Check Clock Chiller Info Latch All
The real time clock had detected loss of its oscillator
at some time in the past. Check / replace battery This
diagnostic can be effectively cleared only by writing a
new value to the chiller’s time clock using the TU's
“set chiller time” functions.
Remote
Condenser Fan
Inverter Fault -
Ckt1
None Info NonLatch All
A fault signal has been detected from at least one of
the Variable Speed Inverter Drive Condenser Fans of
Circuit 1 (including the right hand fan of the Shared
Fan Module if present). No action is taken.
Remote
Condenser Fan
Inverter Fault -
Ckt2
None Info NonLatch All
A fault signal has been detected from at least one of
the Variable Speed Inverter Drive Condenser Fans of
Circuit 2 (including the left hand fan of the Shared
Fan Module if present). No action is taken
Remote
Condenser Rfgt
Pressure
Transducer -
Ckt1
Circuit Immediate Latch All Bad Sensor or LLID Remote
Condenser Rfgt
Pressure
Transducer -
Ckt2
Circuit Immediate Latch All Bad Sensor or LLID Remote
Discharge Rfgt
Temp Sensor –
Cprsr1A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Discharge Rfgt
Temp Sensor –
Cprsr2A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Drive Cooling
Supply Temp
Sensor – Ckt1
Circuit Normal Latch All Bad Sensor or LLID. Remote
Emergency
Stop
Chiller Immediate Latch All
EMERGENCY STOP input is open. An external
interlock has tripped. Time to trip from input opening
to unit stop shall be 0.1 to 1.0 seconds
Local
Evap Rfgt Pool
Temp Sensor –
Ckt1
Circuit and
Chiller
Special Action
and Info
NonLatch All
Bad Sensor or LLID. Note: The Evap Pool Temp
Sensors are used for evaporator freeze protection
(running and non-running)
Remote
Evap Rfgt Pool
Temp Sensor –
Ckt2
Circuit and
Chiller
Special Action
and Info
NonLatch All
Bad Sensor or LLID. Note: The Evap Pool Temp
Sensors are used for evaporator freeze protection
(running and non-running)
Remote
Evap Rfgt Pool
Temp Sensor
Error – Ckt1
Circuit
Info and
Special Action
Latch
Ckt Energized
[Ckt Not
Energized
The evaporator refrigerant pool temperature sensor
is indicating a temperature significantly warmer than
the evaporator entering water temperature (by more
than 7.2°F for 5 continuous min excluding ckt
nonoperation and a 2 min ignore time relative to ckt
startup). While this diagnostic is active, it will
invalidate the evaporator pool temperature sensor.
Freeze protection functions (i.e. freeze diagnostics
and Evap Pump Override) will default to the
respective evaporator pressure transducer and its
calculated saturation temperature
Local
DDiiaaggnnoossttiiccss
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